Thinkpad T490 Bios Password Removal

Thinkpad T490 Bios Password Removal
Device	Thinkpad T490
Affects part(s)	MEC1633
Needs equipment	Soldering Iron; Glasgow Interface Explorer (or other EC programmer)
Difficulty	◉◉◉◌ Hard
Type	Soldering, Software

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Problem description

This guide describes how to remove a Power-On / Supervisor / System Management Password that the laptop might ask for during boot, or while entering setup.

This guide does not apply to hard-drive passwords.

Power-On/Supervisor/System Management Password promt. (Figure 1)

Hard-Drive Password promt -- This guide does not apply! (Figure 2)

Symptoms

• The screen shows the BIOS password icon (Figure 1)
• The screen must not show the HDD password icon (Figure 2)

Solution

If the issue has a single, specific solution, provide it in this section and delete the sub-headers below. Otherwise, if there are multiple potential causes for the problem, outline the process of identifying the root cause and offer corresponding solutions below.